Senate Majority Leader Mitch McConnell launched his re-election campaign website on Wednesday with a bit of political barb, aimed at liberals still fuming over his blocking of former President Barack Obama's final pick for the Supreme Court.

But McConnell immediately declared that there would be no appointment by Obama given that it was a presidential election year. At the time, McConnell's decision created a furor among Democrats in Washington and across the nation.

The Mitch McConnell campaign has a "404" page that takes a political jab at Democrats by showing former Supreme Court nominee Merrick Garland.(Photo: McConnell campaign)

The seat was ultimately filled in 2017 by Justice Neil Gorsuch, after being nominated by President Donald Trump.

"He thought everybody would get a chuckle out of it," Josh Holmes, a McConnell adviser, told the Courier-Journal. "Sen. McConnell has always made it a practice to infuse a little humor into the rough and tumble world of politics."

McConnell has made reshaping the federal courts a focal point of his legacy since Trump took office in 2017. Recently, the GOP leader detonated the "nuclear option" in the Senate to make it easier to push through certain judicial and other low-level appointees.

McConnell speaks to members of the media alongside fellow Senate GOP leaders John Cornyn and John Thune outside the West Wing of the White House after a lunch meeting with President Trump on July 19, 2017. Alex Wong, Getty Images

McConnell points to a stack of papers representing what he claimed to be the regulations associated with President Obama's health care reform as he speaks at the Conservative Political Action Conference in National Harbor, Md., on March 15, 2013. Nicholas Kamm, AFP/Getty Images

President Obama shakes hands with McConnell after signing the $858 billion tax deal into law in a ceremony in the Eisenhower Executive Office Building on Dec. 17, 2010, in Washington. Pablo Martinez Monsivais, AP

McConnell speaks alongside then-House minority leader John Boehner following a meeting with President Obama to discuss the economy and jobs on Feb. 9, 2010, outside of the West Wing of the White House. Mandel Ngan, AFP/Getty Images

McConnell and Sen. Chris Dodd drive the traditional "first nail" to signify the beginning of construction of the 2001 inaugural platform on the West Front terrace of the U.S. Capitol on Dec. 6, 2000. Tim Dillon, USA TODAY